Lots of drama playing out. I don't see it as big news that the Pats want to keep Mayo or that they are looking at offensive coordinator/sideline play caller options. Neither is terribly surprising to me. I don't understand what the big deal is. This is news (good news in my book) but is this really "big" news?
I heard some talk criticizing Belichick for generally liking to bring in assistant coaches that know the Patriots way, know his way, perhaps were with Belichick in the past. Again, I don't find that surprising, at least from a historical perspective. They had a 20 year run with that system. Why would any coach want to bring in assistants that wanted to do it differently.
Times have changed the last couple of seasons. McDaniels is gone (although he was by no means the only successful OC during the Patriot's run). Brady isn't here to be the foundation of the execution of the system on the field. They are in the process of evolving or modernizing the offensive "system" (at least per reports). Patricia didn't get it done so now they are looking at options.
To me, the ideal addition would be someone that understands and fits in with the overall Patriots/Belichick way but that also does bring in some fresh ideas. But most importantly, knows how to work with an offense to get a system implemented. Patricia knew the Patriots way but turned out to not be good enough at teaching and getting the offense ready to execute the scheme. I think they can solve this easy enough but if they don't fix the OL, it won't matter who the OC is.